The warnings are just warning you about settings that are standard to a stock Slackware setup - they are nothing to worry about.
The scripts mentioned are supposed to be scripts, the services activated are on by default in /etc/inetd.conf and the stock setup file /etc/ssh/sshd_config comments out the PermitRootLogin setting.
So, again, nothing to worry about.
I'd recommend reading http://www.slackbook.org/
to get acquainted with your system.